Re: Calling OSGi Service from JSP

[JCR]

Am Sa., 28. März 2020 um 20:55 Uhr schrieb JCR <j...@proxymit.net>:

Hello

I wrote a very simple POJO, built it as OSGi bundle and deployed it to
Sling11. Here's the source:

package rome.testly.testly1;
import org.osgi.service.component.annotations.Component;

@Component(service=SlingFutil.class )
public class SlingFutil {

      public String nonsense() {
          return "This is nonsense";
      }
}

The component/service appears on the Felix console:

symbolic Name   testly1
Version         0.0.1.202003271754
Bundle Location
  /home/juerg/eclipse-workspace/testly1/target/classes
Last Modification       Fri Mar 27 18:54:01 CET 2020
Start Level     20
Exported Packages       ---
Imported Packages       org.osgi.framework,version=1.9.0 from
org.apache.felix.framework (0)
<http://localhost:8080/system/console/bundles/0>
org.osgi.service.component,version=1.4.0 from org.apache.felix.scr (50)
<http://localhost:8080/system/console/bundles/50>
org.slf4j,version=1.7.25 from slf4j.api (20)
<http://localhost:8080/system/console/bundles/20>
Service ID 477 <http://localhost:8080/system/console/services/477>
Types: java.lang.Runnable
Component Name: rome.testly.testly1.SimpleDSComponent
Component ID: 323
Service ID 478 <http://localhost:8080/system/console/services/478>
Types: rome.testly.testly1.SlingFutil
Component Name: rome.testly.testly1.SlingFutil
Component ID: 324



Now I try to call SlingFutil.nonsense() from a JSP:

...
<%@ page import="javax.jcr.*,
          org.apache.sling.api.resource.Resource,
          rome.testly.testly1.*"
%>
...
<%
SlingFutil some = new SlingFutil();
%>
...

At this point, the JSP compiler complains that the type (SlingFutil) is
unknown.
I also tried

sling.getService(rome.testly.testly1.SlingFutil.class);

instead, but the result is the same.

This used to work well at BND times of Sling, so I don't know what's
wrong with this R7 code.

Thanks,
Juerg


On 28.03.20 21:15, Jörg Hoh wrote:
Hi Juerg,

Looks like your bundle does not export that class, so it's not available
outside of that bundle.

Jörg

Hi Jörg

The class is declared as @Component (see above). Do I need any other 
declaration to make the export happen?

Thanks,
Juerg